I've been building apps and websites for over 9 years. On Udemy I teach practical beginner courses in Flutter, Vue.js and JavaScript, including Firebase and SQLite, so you can get to a working app quickly. Several of the courses are free.
A few years ago I also started working with blockchain, DApps and cryptocurrency. The courses stay focused on skills you can use right away: short lessons, direct explanations, and something you can run at the end.
More than 81,000 people have taken a course. I hope you enjoy them.